23 362 Chapter Defined Terms DEFINITIONS AND INTERPRETATIONS Franklin Zoning Ordinance Effective July 1, 2024 B. The collapse or subsidence of land along the shore of a lake or other body of water as a result of erosion or undermining caused by waves or currents of water exceeding anticipated cyclical levels or suddenly caused by an unusually high water level in a natural body of water, accompanied by a severe storm, or by an unanticipated force of nature, such as flash flood or an abnormal tidal surge, or by some similarly unusual and unforeseeable event which results in flooding as defined in Paragraph A.1 of this definition. Flood Elevation Determination A determination by the floodplain administrator of the water surface elevations of the base flood; that is, the flood level that has a one percent or greater chance of occurrence in any given year. Flood Elevation Study An examination, evaluation, and determination of flood hazards and, if appropriate, corresponding water surface elevations, or an examination, evaluation, and determination of mudslide (i.e., mudflow) or flood-related erosion hazards. Flood Hazard Boundary Map (FHBM) An official map of a community, issued by the Federal Emergency Management Agency, where the boundaries of areas of special flood hazard have been designated as Zone A. Flood Insurance Rate Map (FIRM) An official map of a community, issued by the Federal Emergency Management Agency, delineating the areas of special flood hazard or the risk premium zones applicable to the community. Flood Insurance Studies (FIS) The official report provided by the Federal Emergency Management Agency, evaluating flood hazards and containing flood profiles and water surface elevation of the base flood. Flood Protection System Those physical structural works for which funds have been authorized, appropriated, and expended and which have been constructed specifically to modify flooding in order to reduce the extent of the area within a community subject to a “special flood hazard” and the extent of the depths of associated flooding. Such a system typically includes hurricane tidal barriers, dams, reservoirs, levees, or dikes. These specialized flood-modifying works are those constructed in conformance with sound engineering standards. Flood-Related Erosion The collapse or subsidence of land along the shore of a lake or other body of water as a result of undermining caused by waves or currents of water exceeding anticipated cyclical levels or suddenly caused by an unusually high-water level in a natural body of water, accompanied by a severe storm, or by an unanticipated force of nature, such as a flash flood, or by some similarly unusual and unforeseeable event which results in flooding. Flood-Related Erosion Area or Flood-Related Erosion Prone Area A land area adjoining the shore of a lake or other body of water, which due to the composition of the shoreline or bank and highwater levels or wind-driven currents, is likely to suffer flood-related erosion damage.
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